Characterization of electroplated platinum-iridium alloys on the nickel-base single crystal superalloy

Yingna Wu, Aya Suzuki, Hideyuki Murakami, Seiji Kuroda

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

As a high temperature protective layer, platinum-iridium alloys were electroplated on the nickel-base single crystal superalloy TMS-82+ from amidosulfuric acid solutions by the direct current method. It was found that Ir content in the films was always lower than the ratio of concentration ([Ir 3+]/([PtCl62-] + [Ir3+])) in the electrolytes, indicating that preferential deposition of Pt occurred in this study. The asdeposited Pt-Ir films formed an fee single phase structure with a granular surface. When Ir content exceeded 3 at%, Pt-Ir films exhibited the 〈111〉 preferred growth orientation. It was also found that pre-deposition of Ni and Pt promoted the deposition rate and changed composition of overlaying Pt-Ir films.

Original languageEnglish
Pages (from-to)2176-2179
Number of pages4
JournalMaterials Transactions
Volume46
Issue number10
DOIs
Publication statusPublished - 2005 Oct 1

Keywords

  • Direct current method
  • Electroplating
  • Ni-base superalloy
  • Platinum-iridium films
  • Pre-deposition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Characterization of electroplated platinum-iridium alloys on the nickel-base single crystal superalloy'. Together they form a unique fingerprint.

  • Cite this